Dunlop D401 200/55 R17

Dunlop D401 is a winter tyre made in total of 13 sizes, ranging from R16 to R16 - this particular dimension is R17, which means it fits to a 17 inch/431.8mm diameter wheel. 200/55 R17 is 70mm wider than the narrowest dimension (130) and -100mm narrower than the widest one (100). This tyre profile of 55 means the sidewall height of the tyre is 55% of the tyre width (200mm), which results in 110mm sidewall height.